Java电梯模拟

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前言

此程序为单线程简单模拟电梯(初版)，如果存在问题或者设计不合理的地方，请大家帮忙指出。

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一、UML类图

二、代码

电梯调度器

package cn.xx.evevator;

import java.util.*;

public abstract class AbstarctDispatcher {

    protected final Set<Integer> floorList = new LinkedHashSet<>();

    private final HashMap<Integer,Floor> floorObjMap = new HashMap<>(11);

    protected  AbstractEvevator abstractEvevator;

    public void setAbstractEvevator(AbstractEvevator abstractEvevator) {
        this.abstractEvevator = abstractEvevator;
    }

    protected abstract void pressFloor(Integer[] floors);

    public void newPressPanel(String name,int currentFloor, Status status){
        System.out.println(name+"在"+currentFloor+"层按了"+status.NAME+"键");
        // 暂时不考虑反方向
        if (abstractEvevator.status != StatusCommon.stopStatus && abstractEvevator.status.NAME.equals(status.NAME)) {
            abstractEvevator.status.judgeAdd(abstractEvevator.currentFloor,currentFloor,floorList);
        }
        if (abstractEvevator.status == StatusCommon.stopStatus) {
            if (abstractEvevator.currentFloor==currentFloor){
                abstractEvevator.openDoor(currentFloor);
            }
            if (abstractEvevator.currentFloor<currentFloor){
                abstractEvevator.up(currentFloor);
            }
            if (abstractEvevator.currentFloor>currentFloor){
                abstractEvevator.down(currentFloor);
            }


        }
        abstractEvevator.run();
        handler(currentFloor,status,this);
    }
    public void addFloor(int floor){
        floorList.add(floor);
    }

    protected abstract void handler(int currentFloor, Status status,AbstarctDispatcher abstarctDispatcher);


    public void removeFloorObj(Integer floor){
        this.floorObjMap.remove(floor);
    }


    public abstract void upEve(Integer floor);
    public abstract void downEve(Integer floor);

    public Floor getFloorObj(Integer floor) {
        return floorObjMap.get(floor);
    }
    public void putFloorObj(Integer currentFloor,Floor floor){
        this.floorObjMap.put(currentFloor,floor);
    }

}

调度器继承类

package cn.xx.evevator;

import java.util.Arrays;

public class Dispatcher extends AbstarctDispatcher{


    @Override
    protected void pressFloor(Integer[] floors) {
        if (floors!=null && floors.length>0){

        this.abstractEvevator.status.handler(this,floors);
        }
    }

    @Override
    protected void handler(int currentFloor, Status status, AbstarctDispatcher abstarctDispatcher) {
        this.abstractEvevator.status.handler(currentFloor,status,abstarctDispatcher);
    }




    @Override
    public void upEve(Integer floor) {
        this.abstractEvevator.up(floor);
    }

    @Override
    public void downEve(Integer floor) {
        this.abstractEvevator.down(floor);
    }

}

电梯类

package cn.xx.evevator;

public abstract class AbstractEvevator {
    protected final AbstarctDispatcher abstarctDispatcher;

    protected  Status status = StatusCommon.stopStatus;

    protected Integer currentFloor = 1;

    protected AbstractEvevator(AbstarctDispatcher abstarctDispatcher) {
        this.abstarctDispatcher = abstarctDispatcher;
    }



    abstract void up(int floor);

    abstract void down(int floor);

    abstract void openDoor(int floor);

    abstract void show();

    void run(){
        show();
    }

}

电梯继承类

package cn.xx.evevator;

public class Evevator extends AbstractEvevator{


    protected Evevator(AbstarctDispatcher abstarctDispatcher ) {
        super(abstarctDispatcher);
    }

    @Override
    void up(int floor) {
        if (floor==this.currentFloor){
            openDoor(floor);
        }else {
            this.currentFloor = floor;
            System.out.println("电梯正在上升至：" + floor);
            openDoor(floor);
        }
    }


    @Override
    void down(int floor) {
        if (floor==this.currentFloor){
            openDoor(floor);
        }else {
            this.currentFloor = floor;
            System.out.println("电梯正在下降至："+floor);
            openDoor(floor);
        }
    }


    @Override
    void openDoor(int floor) {
        System.out.println(floor+"层开门中，"+status.NAME+"状态");
    }

    @Override
    void show() {
        System.out.println("电梯状态："+this.status.NAME+"，楼层:"+this.currentFloor);
    }
}

楼层

package cn.xx.evevator;

import java.util.HashMap;
import java.util.LinkedHashSet;

public abstract class AbstractFloor {

    protected final int currentFloor;
    protected final Status status;
    protected final Person person;
    protected AbstarctDispatcher abstarctDispatcher;

    protected HashMap<Integer, LinkedHashSet<Person>> personList = new HashMap<>();


    protected AbstractFloor(int currentFloor, Status status, Person person) {
        this.currentFloor = currentFloor;
        this.status = status;
        this.person = person;
        this.abstarctDispatcher = person.abstarctDispatcher;
        LinkedHashSet<Person> people = this.personList.get(currentFloor);
        if (people!=null && people.size()>0){
            people.add(person);
        }else{
            LinkedHashSet<Person> people1 = new LinkedHashSet<>();
            people1.add(person);
            personList.put(currentFloor,people1);
        }
    }


    protected abstract void notifyPersonLiftHere();



}

楼层继承类

package cn.xx.evevator;

import java.util.LinkedHashSet;

public class Floor extends AbstractFloor{

    protected Floor(int currentFloor, Status status, Person person) {
        super(currentFloor, status, person);
    }



    @Override
    protected void notifyPersonLiftHere() {
        LinkedHashSet<Person> people = this.personList.get(currentFloor);
        if (people!=null && people.size()>0){
            for (Person person1 : people) {
                if (person1.floor.status.NAME.equals(person1.abstarctDispatcher.abstractEvevator.status.NAME)) {
                    person1.elevatorIsHere(currentFloor);
                }

            }
        }
    }


}

状态类

package cn.xx.evevator;

import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;
import java.util.Set;

public abstract class  Status {

    public final String NAME;

    protected Status(String name) {
        NAME = name;
    }


    abstract void judgeAdd(int eveFloor, int personFloor, Set<Integer> floorList);

    /**
     * 这个主要用于用户在楼层中按电梯
     * @param currentFloor
     * @param status
     * @param abstarctDispatcher
     */
    abstract void handler(int currentFloor, Status status,AbstarctDispatcher abstarctDispatcher);

    /**
     * 这个主要用于在电梯中按楼层
     * @param abstarctDispatcher
     */
    abstract void handler(AbstarctDispatcher abstarctDispatcher,Integer[] floors);

    void sortFloor(Status status,Integer[] floors, Set<Integer> floorList){
        Arrays.sort(floors);
        if (status.NAME.equals(StatusCommon.downStatus.NAME)){
            Arrays.sort(floors,Collections.reverseOrder());
        }

        for (int floor : floors) {
            if (floor>11 || floor<0){
                System.out.println("楼层输入错误");
                continue;
            }
            if (!floorList.contains(floor))
                floorList.add(floor);
        }
    }
}

上升状态

package cn.xx.evevator;

import java.util.Arrays;
import java.util.Collections;
import java.util.Iterator;
import java.util.Set;

public class UpStatus extends Status{


    public UpStatus(String name) {
        super(name);
    }

    @Override
    public void judgeAdd(int eveFloor, int personFloor, Set<Integer> floorList) {
        if (eveFloor<personFloor){
            floorList.add(personFloor);
        }
    }

    @Override
    public void handler(int currentFloor, Status status,AbstarctDispatcher abstarctDispatcher) {
        abstarctDispatcher.abstractEvevator.status = this;
        if (abstarctDispatcher.abstractEvevator.currentFloor>currentFloor){
            return;
        }

        for (Integer floor : abstarctDispatcher.floorList) {
            if (abstarctDispatcher.abstractEvevator.currentFloor==floor){
//                abstarctDispatcher.abstractEvevator.openDoor(floor);
            }else {
                abstarctDispatcher.upEve(floor);
            }
            abstarctDispatcher.floorList.remove(floor);
            Floor floorObj = abstarctDispatcher.getFloorObj(floor);
            floorObj.notifyPersonLiftHere();
            abstarctDispatcher.removeFloorObj(floor);

        }
    }

    @Override
    void handler(AbstarctDispatcher abstarctDispatcher,Integer[] floors) {
        sortFloor(StatusCommon.upstatus,floors,abstarctDispatcher.floorList);

        for (int floor : floors) {
            if (floor>11 || floor<0){
                System.out.println("楼层输入错误");
                continue;
            }
            if (!abstarctDispatcher.floorList.contains(floor))
                abstarctDispatcher.floorList.add(floor);
        }
        Iterator<Integer> iterator = abstarctDispatcher.floorList.iterator();
        while (iterator.hasNext()) {
            Integer next = iterator.next();
            abstarctDispatcher.abstractEvevator.currentFloor=next;
            abstarctDispatcher.upEve(next);
            iterator.remove();
        }
        abstarctDispatcher.abstractEvevator.status = StatusCommon.stopStatus;
    }
}

下降状态

package cn.xx.evevator;

import java.util.Arrays;
import java.util.Iterator;
import java.util.Set;

public class DownStatus extends Status{

    public DownStatus(String name) {
        super(name);
    }


    @Override
    public void judgeAdd(int eveFloor, int personFloor, Set<Integer> floorList) {
        floorList.add(personFloor);
    }

    @Override
    public void handler(int currentFloor, Status status,AbstarctDispatcher abstarctDispatcher) {
        abstarctDispatcher.abstractEvevator.status = this;
        if (abstarctDispatcher.abstractEvevator.currentFloor<currentFloor){
            return;
        }

        for (Integer floor : abstarctDispatcher.floorList) {
            if (abstarctDispatcher.abstractEvevator.currentFloor==floor){
                abstarctDispatcher.abstractEvevator.openDoor(floor);
            }else {
                abstarctDispatcher.downEve(floor);
            }
            abstarctDispatcher.floorList.remove(floor);
            Floor floorObj = abstarctDispatcher.getFloorObj(floor);
            floorObj.notifyPersonLiftHere();
            abstarctDispatcher.removeFloorObj(floor);

        }
    }

    @Override
    void handler(AbstarctDispatcher abstarctDispatcher,Integer[] floors) {
        sortFloor(StatusCommon.downStatus,floors,abstarctDispatcher.floorList);
        Iterator<Integer> iterator = abstarctDispatcher.floorList.iterator();
        while (iterator.hasNext()) {
            Integer next = iterator.next();
            abstarctDispatcher.abstractEvevator.currentFloor=next;
            abstarctDispatcher.downEve(next);
            iterator.remove();
        }
        abstarctDispatcher.abstractEvevator.status = StatusCommon.stopStatus;
    }
}

停止状态

package cn.xx.evevator;

import java.util.Set;

public class StopStatus extends Status{
    public StopStatus(String name) {
        super(name);
    }

    @Override
    public void judgeAdd(int eveFloor, int personFloor, Set<Integer> floorList) {
        if (eveFloor>personFloor){
            floorList.add(personFloor);
        }
    }

    @Override
    public void handler(int currentFloor, Status status,AbstarctDispatcher abstarctDispatcher) {
        status.handler(currentFloor,status,abstarctDispatcher);
    }

    @Override
    void handler(AbstarctDispatcher abstarctDispatcher,Integer[] floors) {

    }
}

人员类

package cn.xx.evevator;

import org.springframework.util.StringUtils;

public class Person {
    protected Floor floor;
    protected final AbstarctDispatcher abstarctDispatcher;
    protected final Integer[] expectFloor;
    protected final String name;

    private Person(AbstarctDispatcher abstarctDispatcher, Integer[] expectFloor, String name) {
        this.abstarctDispatcher = abstarctDispatcher;
        this.expectFloor = expectFloor;
        this.name = name;
    }

    public void setFloor(Floor floor){
        this.floor = floor;
        abstarctDispatcher.putFloorObj(floor.currentFloor,floor);
        abstarctDispatcher.addFloor(floor.currentFloor);
        abstarctDispatcher.newPressPanel(name,floor.currentFloor,floor.status);
    }


    public void press(Integer[] floor){
        abstarctDispatcher.pressFloor(floor);
    }


    public void elevatorIsHere(int floor){
        System.out.println(floor+"层到了，"+this.name+"请进电梯！");
        press(expectFloor);
    }

    public static class Builder{
        private AbstarctDispatcher abstarctDispatcher;
        private Integer[] expectFloor;
        private String name;

        public Builder(AbstarctDispatcher abstarctDispatcher){
            this.abstarctDispatcher = abstarctDispatcher;
        }

        public Builder expectFloor(Integer[] expectFloor){
            this.expectFloor = expectFloor;
            return this;
        }

        public Builder name(String name){
            if (StringUtils.isEmpty(name)){
                this.name = "";
            }else{
                this.name = name;
            }
            return this;
        }

        public Person build(){
            return new Person(abstarctDispatcher,expectFloor,name);
        }

    }

}

状态common

package cn.xx.evevator;

public class StatusCommon {

    public static final UpStatus upstatus = new UpStatus("上升");
    public static final DownStatus downStatus = new DownStatus("下降");
    public static final StopStatus stopStatus = new StopStatus("停止");

}

三、测试

public class Test {
    public static void main(String[] args) {
        Dispatcher dispatcher = new Dispatcher();
        Evevator evevator = new Evevator(dispatcher);
        dispatcher.setAbstractEvevator(evevator);
        // 张三在2层按了上行行键 进去电梯后按6楼和8楼
        Person person = new Person
                .Builder(dispatcher)
                .name("张三")
                .expectFloor(new Integer[]{3, 1})
                .build();
        person.setFloor(new Floor(11, StatusCommon.downStatus,person));

        // 李四在8层按了上行键 进去电梯后按10楼和11楼
        Person person1 = new Person
                .Builder(dispatcher)
                .name("李四")
                .expectFloor(new Integer[]{10,11})
                .build();
        person1.setFloor(new Floor(8,StatusCommon.upstatus,person1));

        // 王五在3层按了上行键 进去电梯后按9楼和11楼
        Person person3 = new Person
                .Builder(dispatcher)
                .name("王五")
                .expectFloor(new Integer[]{9,11})
                .build();
        person3.setFloor(new Floor(3,StatusCommon.upstatus,person3));

        // 王五在6层按了下行键 进去电梯后按5楼和1楼
        Person person2 = new Person
                .Builder(dispatcher)
                .name("刘九")
                .expectFloor(new Integer[]{1,5})
                .build();
        person2.setFloor(new Floor(6,StatusCommon.downStatus,person2));

    }
}

运行结果：

张三在11层按了下降键
电梯正在上升至：11
11层开门中，停止状态
电梯状态：停止，楼层:11
11层开门中，下降状态
11层到了，张三请进电梯！
3层开门中，下降状态
1层开门中，下降状态
李四在8层按了上升键
电梯正在上升至：8
8层开门中，停止状态
电梯状态：停止，楼层:8
8层到了，李四请进电梯！
10层开门中，上升状态
11层开门中，上升状态
王五在3层按了上升键
电梯正在下降至：3
3层开门中，停止状态
电梯状态：停止，楼层:3
3层到了，王五请进电梯！
9层开门中，上升状态
11层开门中，上升状态
刘九在6层按了下降键
电梯正在下降至：6
6层开门中，停止状态
电梯状态：停止，楼层:6
6层开门中，下降状态
6层到了，刘九请进电梯！
5层开门中，下降状态
1层开门中，下降状态